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Finding the Fourth Proportional to 104.43, 144 and 71.61

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Solution

The fourth proportional to 104.43, 144 and 71.61 is: 98.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    104.43 : 144 = 71.61 : x
  2. Step 2: Convert to fraction form
    104.43/144 = 71.61/x
  3. Step 3: Cross multiply
    104.43x = 144 × 71.61
  4. Step 4: Simplify right side
    104.43x = 10,311.84
  5. Step 5: Solve for x
    x = 10,311.84/104.43
  6. Step 6: Final answer
    x = 98.74

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